Irwin® HSS TCT Tip Drill Bit 4.5mm OL:80mm WL:47mm example 20x short full thread

20x short full thread

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C Class (from 2018)

Self-Closing Barrel Tap with a 3/4" BSP thread

Irwin® HSS TCT Tip Drill Bit 4.5mm OL:80mm WL:47mm example 20x short full threadThe Irwin Metric TCT (Tungsten Carbide Tipped) Drill Bits offer precision drilling with stationary machines in hardened steel, cast iron, bronze alloys and manganese alloyed steel. The C2 Carbide Tip will drill hardened material up to a hardness of 50 Rockwell C and is four facetted ground for low drilling pressure and perfect centring. The body of the drill bit is made from Chrome Vanadium Steel, hardened to 56 Rockwell C. A coolant should always be